What do jeggings, Kimye, slankets and Brangelina have in common? They're partnerships of two things that, when combined, become even more major. And the coatigan is the latest recruit to the pack. The coat/cardigan hybrid (seen here on model and fashion blogger Natalie Suarez) is ideal for the freaky not-that-cold-and-not-that-hot weather that seems to be the trend this fall. It's all about the power of two, people.